package com.platform.util;

/**
 * Created by zhouhaisheng on 2018/11/8.
 */

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;

/**
 * 网络访问工具类
 *
 * @author silk
 */
public class JuheUtil {

  public static final String DEF_CHATSET = "UTF-8";
  public static final int DEF_CONN_TIMEOUT = 30000;
  public static final int DEF_READ_TIMEOUT = 30000;
  public static String userAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36";

  public static String net(String strUrl, Map params, String method) throws Exception {
    HttpURLConnection conn = null;
    BufferedReader reader = null;
    String rs = null;
    try {
      StringBuffer sb = new StringBuffer();
      if (method == null || method.equals("GET")) {
        strUrl = strUrl + "?" + urlencode(params);
      }
      URL url = new URL(strUrl);
      conn = (HttpURLConnection) url.openConnection();
      if (method == null || method.equals("GET")) {
        conn.setRequestMethod("GET");
      } else {
        conn.setRequestMethod("POST");
        conn.setDoOutput(true);
      }
      conn.setRequestProperty("User-agent", userAgent);
      conn.setUseCaches(false);
      conn.setConnectTimeout(DEF_CONN_TIMEOUT);
      conn.setReadTimeout(DEF_READ_TIMEOUT);
      conn.setInstanceFollowRedirects(false);
      conn.connect();
      if (params != null && method.equals("POST")) {
        try {
          DataOutputStream out = new DataOutputStream(conn.getOutputStream());
          out.writeBytes(urlencode(params));
        } catch (Exception e) {
          // TODO: handle exception
        }
      }
      InputStream is = conn.getInputStream();
      reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
      String strRead = null;
      while ((strRead = reader.readLine()) != null) {
        sb.append(strRead);
      }
      rs = sb.toString();
    } catch (IOException e) {
      e.printStackTrace();
    } finally {
      if (reader != null) {
        reader.close();
      }
      if (conn != null) {
        conn.disconnect();
      }
    }
    return rs;
  }

  //将map型转为请求参数型
  public static String urlencode(Map<String, Object> data) {
    StringBuilder sb = new StringBuilder();
    for (Map.Entry i : data.entrySet()) {
      try {
        sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue() + "", "UTF-8"))
            .append("&");
      } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
      }
    }
    return sb.toString();
  }


  public static void main(String[] args) {

  }

}